Silver mirror test

Silver mirror test

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This image is part of the sequence Science and technology: Silver mirror test

Credit: MARTYN F. CHILLMAID/SCIENCE PHOTO LIBRARY

Caption: Silver mirror test with Tollens' reagent. When a few drops of an aldehyde solution are added to a clear solution of Tollens' reagent a precipitate start to form. Gradually it darkens The test differentiates between aldose and ketose sugars. Tollen's reagent is made from diluteÂÂ sodium hydroxideÂÂ added aqueousÂÂ silver nitrate and then ammonia is added to the resulting solution.

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Keywords: aldehyde, aldose, ammonia, aqueous, coating, darkens, differentiates, ketose, mirror surface, no-one, nobody, precipitate, silver, silver mirror test, silver nitrate, sodium hydroxide, solution, sugars, test, test tubes, tollens' reagent

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